Over last few days, Bitcoin users faced with a significant reduction in transaction fees along with decreasing of unconfirmed transactions mempool size.
Thus, if at the end of last week to confirm the transaction in the next block it was enough to pay 10-12 satoshi / bytes, by Tuesday morning this figure decreased almost 10 times.
— Armin van Bitcoin (@ArminVanBitcoin) January 30, 2018
Thus, the average cost of a transaction in a dollar equivalent to date is only $ 0.25 - a really big decline compared to $ 30 - $ 40, which users had to pay back in late December / early January.
In part, these figures are explained by the overall decrease of bitcoin's price, but it is obvious that the commission itself fell noticeably: three or four weeks ago, more than 100 satosh / bytes were required to confirm the transaction quick.
It can also be assumed that the amount of spam transactions on the network has been noticeably reduced.
Also worth paying attention to the mempool: today its size is less than 40Mb, although in mid-January this figure reached 140MB.
The percentage of SegWit-transactions in the bitcoin network, which also help to reduce the commission, on Sunday reached a record of 18.3%. As of Tuesday morning, January 30, its share in the total volume of transactions is estimated at 16%.